Satellite and ground based estimates for ice surface velocities in the part of central Dronning Maud Land, East Antarctica: Implications for ice flux calculations
The ice sheet and glaciers of Antarctica and Greenland represent the largest sources of freshwater on planet Earth. The understanding and quantification of their dynamic properties such as albedo, precipitation, ice mass movement, and ice elevation changes are critical for the improved climate and m...
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ftnipr:oai:nipr.repo.nii.ac.jp:00016878 2023-05-15T13:46:39+02:00 Satellite and ground based estimates for ice surface velocities in the part of central Dronning Maud Land, East Antarctica: Implications for ice flux calculations 2021-12 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16878 http://id.nii.ac.jp/1291/00016747/ en eng https://doi.org/10.1016/j.polar.2021.100737 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16878 http://id.nii.ac.jp/1291/00016747/ Polar Science, 30, 100737(2021-12) 18739652 Icesheet Interferometry Ice stream velocity Ice fluxes Mass balance Journal Article 2021 ftnipr https://doi.org/10.1016/j.polar.2021.100737 2023-02-18T20:11:55Z The ice sheet and glaciers of Antarctica and Greenland represent the largest sources of freshwater on planet Earth. The understanding and quantification of their dynamic properties such as albedo, precipitation, ice mass movement, and ice elevation changes are critical for the improved climate and mass balance models. The present study utilizes space-borne optical and synthetic aperture radar (SAR) imagery to measure the ice surface velocity at high spatial resolution for a part of the central Dronning Maud Land (cDML), East Antarctica. The datasets from Landsat-8 and Sentinel-1 SAR satellite are used for ice stream velocity estimation using feature-offset tracking and differential interferometric SAR (DInSAR) methods. The derived velocity products are validated with ground based stakes network at annual time scale. The fundamental ice flow laws are used to estimate the ice outflux or discharge for selected ice stream drainage basins of cDML at fluxgate locations. The ice stream basin has been delineated using combination of elevation, slope and continental scale velocity maps. The ice influx for study area is estimated using ECMWF fifth generation reanalysis (ERA5) and Regional Atmospheric Climate Model (RACMO) v2.3 model outputs. The estimated influx and outflux are in the ranges of 0.18–4.167 Gt/y and 0.201 to 1.278 Gt/y respectively, indicating net positive mass balance for the selected area. Article in Journal/Newspaper Antarc* Antarctica Dronning Maud Land East Antarctica Greenland Ice Sheet Polar Science Polar Science National Institute of Polar Research Repository, Japan East Antarctica Dronning Maud Land Greenland Polar Science 30 100737 |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
topic |
Icesheet Interferometry Ice stream velocity Ice fluxes Mass balance |
spellingShingle |
Icesheet Interferometry Ice stream velocity Ice fluxes Mass balance Satellite and ground based estimates for ice surface velocities in the part of central Dronning Maud Land, East Antarctica: Implications for ice flux calculations |
topic_facet |
Icesheet Interferometry Ice stream velocity Ice fluxes Mass balance |
description |
The ice sheet and glaciers of Antarctica and Greenland represent the largest sources of freshwater on planet Earth. The understanding and quantification of their dynamic properties such as albedo, precipitation, ice mass movement, and ice elevation changes are critical for the improved climate and mass balance models. The present study utilizes space-borne optical and synthetic aperture radar (SAR) imagery to measure the ice surface velocity at high spatial resolution for a part of the central Dronning Maud Land (cDML), East Antarctica. The datasets from Landsat-8 and Sentinel-1 SAR satellite are used for ice stream velocity estimation using feature-offset tracking and differential interferometric SAR (DInSAR) methods. The derived velocity products are validated with ground based stakes network at annual time scale. The fundamental ice flow laws are used to estimate the ice outflux or discharge for selected ice stream drainage basins of cDML at fluxgate locations. The ice stream basin has been delineated using combination of elevation, slope and continental scale velocity maps. The ice influx for study area is estimated using ECMWF fifth generation reanalysis (ERA5) and Regional Atmospheric Climate Model (RACMO) v2.3 model outputs. The estimated influx and outflux are in the ranges of 0.18–4.167 Gt/y and 0.201 to 1.278 Gt/y respectively, indicating net positive mass balance for the selected area. |
format |
Article in Journal/Newspaper |
title |
Satellite and ground based estimates for ice surface velocities in the part of central Dronning Maud Land, East Antarctica: Implications for ice flux calculations |
title_short |
Satellite and ground based estimates for ice surface velocities in the part of central Dronning Maud Land, East Antarctica: Implications for ice flux calculations |
title_full |
Satellite and ground based estimates for ice surface velocities in the part of central Dronning Maud Land, East Antarctica: Implications for ice flux calculations |
title_fullStr |
Satellite and ground based estimates for ice surface velocities in the part of central Dronning Maud Land, East Antarctica: Implications for ice flux calculations |
title_full_unstemmed |
Satellite and ground based estimates for ice surface velocities in the part of central Dronning Maud Land, East Antarctica: Implications for ice flux calculations |
title_sort |
satellite and ground based estimates for ice surface velocities in the part of central dronning maud land, east antarctica: implications for ice flux calculations |
publishDate |
2021 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16878 http://id.nii.ac.jp/1291/00016747/ |
geographic |
East Antarctica Dronning Maud Land Greenland |
geographic_facet |
East Antarctica Dronning Maud Land Greenland |
genre |
Antarc* Antarctica Dronning Maud Land East Antarctica Greenland Ice Sheet Polar Science Polar Science |
genre_facet |
Antarc* Antarctica Dronning Maud Land East Antarctica Greenland Ice Sheet Polar Science Polar Science |
op_relation |
https://doi.org/10.1016/j.polar.2021.100737 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16878 http://id.nii.ac.jp/1291/00016747/ Polar Science, 30, 100737(2021-12) 18739652 |
op_doi |
https://doi.org/10.1016/j.polar.2021.100737 |
container_title |
Polar Science |
container_volume |
30 |
container_start_page |
100737 |
_version_ |
1766244968397012992 |